Fuel control adapter for gas stoves



Oct. 3, 1950 G. KLEIN FUEL CONTROL ADAPTER FOR GAS STOVES Filed Jan.v 29 1948 INVENTOR- qus'l-M/ KLEI rl Patented Oct. 3, 1950 FUEL CONTROL ADAPTER FOR GAS STOVES Gustav Klein, Melrose Park, Pa., assignor to Caloric Stove Corporation, Philadelphia, Pa., a corporation of Pennsylvania Application January 29, 1948, Serial No. 4,984

My invention relates to a cooking gas stove of the type in which the burner which heats the oven and broiler compartments is ignited by means of a constantly lit pilot burner.

One object of the invention is to produce an improved stove of the type set forth.

In cooking stoves employing a pilot burner for ignitin the broiler or oven burner, a shutoff valve is used which will automatically stop the flow of gas to the oven or broiler burner whenever the pilot burner is extinguished. Also, an automatically functioning heat control device is used for controlling the heat input of said oven or broiler burner.

The shut-01f valve and the heat control device must be connected toeach other and to the main and pilot burners and it is therefore a further object of the invention to produce improved means for connecting the shut off valve, and the heat control device to each other and to the burners.

A still further object of the invention is to produce improved means by means of which the heat control device is mounted on; but receives no gas directly from, the gas manifold, and whereby, the valve handle which regulates the heat control device will be adjacent, and in line with, the valve handles of the top burners which are mounted on, andwhich receive gas directly from, the gas manifold.

The problem suggested is'made more di'fiicult by the fact that the space available, ingw hat is known as the burner box, is limited.

It is therefore a still further object of the invention to produce compact means for mount-. ing the heat control device and for connecting it to the shut-off valve and to the mainburner in a practical and inexpensive manner.

These and other objects are attained by my invention as set forth in the followin specification and shown in the accompanying drawings in which:

Fig. 1 is a diagrammatic front elevational view of a cooking stove embodying my invention, certain parts being broken away to show details of construction.

Fig. 2 is a diagrammatic view, partly in elevation and partly in section, showing the relationship of the various parts of the assembly.

Fig. 3 is a vertical sectional view of a combined gas inlet and heat control, the same being support shown detached.

In Fig. 1 there is shown a cooking stove having a cooking top IQ for accommodating the desired number of gas burners [2, an oven compartment 3 Claims. (01.126-39) I4, 9. broiler compartment 16 and utility or storage compartments I8. The burners are supplied with gas from a manifold 20 and are controlled by valves 22. The oven I4 is heated by means of a gas burner 24 which is usually located in the broiler compartment and which is supplied with gas in a manner hereinafter set forth. The burner 24 is ignited by means of a constantly lit pilot burner 28 which is supplied with gas by means of a pipe 30.

As best shown in Fig. 2, I use a valve 32 which is provided with a gas inlet pipe 34 and with a gas outlet pipe 36. The inlet pipe 34 leads from the gas main 2!] into a chamber which is connected by a passage 40 to a chamber 42 to which the outlet pipe 36 is connected. The chamber 38 can be sealed off from the passage 40 by means of a spring pressed valve 44. The valve 44 may be moved to non-obstructing position by means of an electro-magnet 46. The electromagnet is adapted to be energized by electric current generated by a thermo-couple 48 located adjacent the pilot burner 28. By this arrangement, as long as the pilot burner 28 is ignited, the electric current generated in the thermo-couple will energize the magnet so as to move the valve 44 to non-obstructing position, or to the right as shown in Fig. 2. When the pilot burner is extinguished, the magnet will be de-energized and the spring actuated valve 44 will seal the chamber 38 off from the passage 40.

In order to be able to re-ignite the pilot burner 28, a push button 50. is provided for actuating a rod 52. The rod 52 extends through the passage 4!] and is adapted, when it is moved to the right in Fig. 2, to contact and unseat the valve 44 so as to permit gas to flow, through chamber 38, and passage 40, into pipe 30 which is cut into the passage 40 intermediate the ends thereof as shown at 54. In order to prevent gas from reaching the gas outlet pipe 36 until after the pilot burner has been lit, the rod 52 carries a valve 55 which, when the rod 52 is in its extreme right hand position, seals the passage 40 from the chamber 42. In other words, when the push button 50 is pressed in, or to the right, gas can flow from the manifold 2|], through the pipe 34, the chamber 38, the connecting passage 40, and the pipe 30, to the pilot burner 28. In this position of the parts, no gas can reach the main burner 24. The push button 50 is held in its inner, or right hand, position until the pilot burner 28 is lit and until the thermo-couple 48 has been heated enough to generate electric current sufficient to energize the magnet 46. When this has taken place, pressure on the button 50 is relieved and the spring 58 moves the rod 52 and the valve 56 to the left, as viewed in Fig. 2, so as to permit gas to flow through the passage 49 into the chamber 42 and out through the outlet pipe 36. The shut off valve mechanism described is located as near to the burners 24 and 28 as possible without being subjected to high temperatures As shown, the shut ofi valve is located in some accessible location in the storage compartment I 8.

From the shut off valve the outlet pipe 36 leads to a conventional combined shut off and heat control device 60 and a pipe 62 leads from the heat control device to the burner 24. The heat control device is connected to a fluid-operated thermostat 64 for controlling the heat input of the burner and is provided with a valve 66 for controlling the flow of gas through the heat control device.

In order to be able to position the heat control device 60 in line with the valves 22, I have devised an adapter which serves as a combined gas supply fitting and support.

The adapter referred to includes a hollow body t8 having a threaded nipple ill for engaging the end of pipe 36 leading from the control device 60, and having a discharge opening 14 leading from the upper side of body 68 into the inlet opening 18 formed in the bottom of the heat control 60.

The adapter is suitably secured in relation to th heat control device 60 by means of screws 16 as shown in Fig. 2 or in any other suitable manner.

The adapter is provided with a threaded plug 80 which engages the gas manifold 28, as shown in Fig. 2 so as to mount the heat control device 60 on the manifold 20. By this arrangement, the heat control is carried by the manifold 20, in line with the valves 22 but is supplied with gas through th valve 32.

What I claim is:

1. The combination with a gas range having a gas manifold near the top surface thereof, a

burner remote from said manifold, a safety valve 7 adapted to stop the flow of gas to said burner, said valve having an intake opening and an outlet opening, means connecting the intake opening of said safety valve to said manifold, a heat control device for regulating or stopping the flow of gas to said burner. said device having an intake opening and an outlet, and means connecting said outlet to said burner, of a combined mounting and gas connection unit for mounting said heat control device adjacent said manifold and for connecting it in flow relation to the outlet of said safety valve, said unit including a housing 5 having an intake nipple and a discharge opening, and having a passage connecting said nipple to said discharge opening, means for securing said housing to said heat control device with the discharge opening of said housing in registration with the intake opening of said heat control device, means connecting said intake nipple to the outlet opening of said safety valve and means carried by said housing and engageable directly with said manifold for mounting said heat control device on said manifold.

2. The structure recited in claim 1 in which said safety valve is in th vicinity of said burner, in which the last mentioned means is in the nature of an imperforate threaded member, and in which said member engages a tapped opening in said manifold.

3. An adapter serving as a combined gas connection and as a mounting unit for connecting a safety valve in flow relation to a shut off and heat control device and for mounting said shut off and heat control device, said safety valve being connected in flow relation to a gas main and said shut off and heat control device being connected in flow relation to a gas burner, said adapter including a housing having an inlet opening adapted to be connected in fiow relation to the outlet of the safety valve, said housing further having a wall, forming a seat for said shut off and heat control device, there being a discharge opening in said Wall adapted to register with th intake opening of said shut off and heat control device and a passage in said housing connecting said inlet and discharge openings, said adapter further including means for securing said shut off and heat control device on said wall, and means carried by said housing for mounting said housing on said gas main.

GUSTAV KLEIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,072,034 Geurink Feb. 23, 1937 2,153,886 Grayson Apr. 11, 1939 2,164,887 Roberts July 4, 1939 

